Is UAL5666 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
17 min early
Official source · Updated
Departure
Idaho Falls
IDA
Actual
Scheduled 22:22
Sep 8
Arrival
Denver
DEN
Actual
Scheduled 17:49
Sep 8
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
IDADEN
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 8 min early
IDA → DEN
- 144 min late
IDA → DEN
- 27 min early
IDA → DEN
- 18 min early
IDA → DEN
- 8 min late
IDA → DEN
Flight history and details
Aug 21, 2026 — Sep 20, 2026
- Observed arrivals
- 16
- Arrivals over 15 minutes late
- 2
- Observed cancellations
- 0
- Observed occurrences
- 16
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 19, 2026Arrived | Idaho Falls | Denver | -8 | |
| Sep 18, 2026Arrived | Idaho Falls | Denver | 144 | |
| Sep 17, 2026Arrived | Idaho Falls | Denver | -27 | |
| Sep 16, 2026Arrived | Idaho Falls | Denver | -18 | |
| Sep 15, 2026Arrived | Idaho Falls | Denver | 8 | |
| Sep 14, 2026Arrived | Idaho Falls | Denver | 15 | |
| Sep 13, 2026Arrived | Idaho Falls | Denver | 28 | |
| Sep 12, 2026Arrived | Idaho Falls | Denver | -30 | |
| Sep 11, 2026Arrived | Idaho Falls | Denver | -8 | |
| Sep 10, 2026Arrived | Idaho Falls | Denver | -6 | |
| Sep 9, 2026Arrived | Idaho Falls | Denver | -21 | |
| Sep 8, 2026Arrived | Idaho Falls | Denver | -17 | |
| Sep 7, 2026Arrived | Idaho Falls | Denver | -18 | |
| Sep 6, 2026Arrived | Idaho Falls | Denver | -19 | |
| Sep 5, 2026Arrived | Idaho Falls | Denver | -28 | |
| Sep 4, 2026Arrived | Idaho Falls | Denver | -25 |